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Show 790 MR. H. ADAMS ON NEW SHELLS FROM THE RED SEA. [Nov. 15, TELLINA (PERONAEA) SCITULA, H. Ad. (Plate XLVIII. fig. 7.) T. testa tenui, ovato-trigona, convexiuscula, subeequilaterali, concentrice concinne striatula, albida vel luteo-albida; umbonibus parvis, prominulis, submedianis; latere antico ovali; latere postico subtriangulari, subcompresso; margine ventrali lente arcuato; flexura valida. Long. 17, alt. 11, lat. 5 mill. TELLINA (PERONAEA) ERYTHRAEENSIS, H. Ad. (Plate XLVIII. fig. 8.) T. testa tenuiuscula, transversa, convexiuscula, ineequilaterali, et oblique lirata, pallide carnea; umbonibus postme-dianis, parvis; latere antico ovato; latere postico breviore, compresso, antice oblique truncato; margine ventrali antice arcuato, postice fere recto; flexura valde distincta. Long. 16, alt. 9-j, lat. 6 mill. TELLINA (PERONAEA) TRIRADIATA, H. Ad. (Plate XLVIII. fig. 9.) T. testa tenui, transversa, elongato-ovata, ineequilaterali, concentrice conferte striata, albida, radiis rubris tribus picta ; umbonibus ad trientem posticalem sitis; latere antico ovato; latere postico breviore, subacuminato, ad apicem oblique subtruncato; margine ventrali arcuato ,- flexura satis distincta. Long. 11T§, alt. 6, lat. 4 mill. TELLINA (PERONAEA) LACTEA, H. Ad. T. testa tenuiuscula, transversa, valde ineequilaterali, concentrice striata, striis posticis lamellosis, et partim oblique striata, lactea; umbonibus parvis, prominulis, ad quadrantem posticum sitis; extremitate antica semiovali ; extremitate postica brevi, valde arcuata, infra angulata; margine ventrali rectiusculo; flexura mediocri. Long. 10, alt. 6, lat. 3 mill. TELLINA (ARCOPAGIA) ISSELI, H. Ad. (Plate XLVIII. fig. 10.) T. testa tenuiuscula, sub orbicular i, convexa, eequilaterali, striis lamellosis numerosis concentricis ornata, pallide lutea, radiis rubris picta ; latere antico rotundato ; latere postico subangulate flexura inconspicua. Long. 11, alt. 10, lat. 5 mill. This species very much resembles T. balaustina, Linn.; but the posterior side is somewhat more angulated, and the concentric striae, which are less numerous, are much stronger. TELLINA (ARCOPAGIA) SAVIGNYI, H. Ad. (Plate XLVIII. fig. 11.) T. testa tenuiuscula, subovata, convexa, subeequilaterali, concentrice conferte slriata, striis postice fere obsoletis, albida; umbonibus |